N
- named color space
- A color space in which each color has a name; colors are generally ordered so that each has an equal perceived distance from its neighbors in the color space.
- named color space profile
- A profile that contains data for a list of named colors. The profile specifies a device color value and the corresponding CIE value for each color in the list
See also: profile, abstract profile, color space profile, device profile, named color space profile
- names table
- A table that NBP builds on each node; the table contains the name and internet address of each entity in that node that is registered with NBP.
- Name-Binding Protocol (NBP)
- An AppleTalk protocol that provides a way to map user-friendly names associated with applications and processes to their machine-readable addresses. Users can choose an application based on its NBP name, and application
s and processes can contact another application or process based on its address.
- nanokernel
- The lowest-level part of the system software for PowerPC processor-based Macintosh computers.
- NaN (Not-a-Number)
- A special bit pattern produced when a floating-point operation cannot produce a meaningful result (for example, 0/0 produces a NaN). NaNs propagate through arithmetic operations.
- National Television System Committee (NTSC)
- Refers to the color-encoding method adopted by the committee in 1953. This standard was the first monochrome-compatible, simultaneous color transmission system used for public broadcasting. This method is used widely in the United States.
- native
- Characters in a character set that belong to the character set traditionally defined for the writing system of that font. For example, a Hebrew font can display both Hebrew characters and Roman characters. The Hebrew characters are native to the font and the script system; the Roman characters are not.
- native application
- An application whose executable code is in the instruction set architecture of the CPU
See also: PowerPC application
- native file type
- A file type that an application identifies as one it can open without requesting additional translation.
- natural alignment
- The alignment of a data type when allocated in memory or assigned a memory address
See also: embedding alignment
- Navigation Services
- A programming interface used by applications to present a standard human interface for opening and saving files.
- NBP
See: Name-Binding Protocol (NBP)
- NBP names directory
- The collection of NBP names tables on all the nodes in an internet.
- NCEG
- Numerical C Extensions Group. See ANSI X3J11.1.
- near model
- The default model of the classic 68K runtime architecture, which specifies 16-bit addressing for code and data
See also: far model
- neighborhood base font
- The font with the lowest font family ID for a particular script system.
- nested letter
- A complete letter included whole within another letter.
- nested message
- Any type of message included whole within another message.
- nesting level
- An indication of how many messages are nested within a given message. For example, a letter that contains one nested letter has a nesting level of 1, and a letter that contains no nested letters has a nesting level of 0.
- network architecture
- The design or assemblage of the various components of a network into a unified structure.
- network number
- A 16-bit number used to indicate the AppleTalk network that a node is connected to.
- network number range
- For an extended network, the range of network numbers that are valid for use by nodes on a particular AppleTalk network.
- network-visible entity
- A network entity that is registered with NBP. After the entity is registered, it is made visible and is available to other entities throughout the network.
- neutral type
- A glyph directionality in which the glyph direction is always that of the surrounding glyphs
See also: strong type, weak type
- newline character
- Any character, but usually the Return character (ASCII code $0D), that indicates the end of a sequence of bytes.
- newline mode
- A mode of reading data in which the end of the data is indicated by a newline character (and not by a specific byte count).
- nextafter functions
- Functions that return the next value after the input value that is representable in one of the floating-point data formats. For example, nextafterd(0, +\xC1) returns the value that comes immediately after 0 in the direction of +\xC1 in double format.
- node
- (1) A data-link addressable entity on an AppleTalk network. All physical devices on an AppleTalk network, such as personal computer workstations, printers, and Macintosh computers acting as file servers, print servers, and routers, are nodes. (2) A part of a B*-tree.
- node descriptor
- The first part of a B*-tree node; it contains information about the node, as well as forward and backward links to other nodes.
- node ID
- An 8-bit number assigned to a node on an AppleTalk network that is used to identify that node in conjunction with the network number. A node ID is part of the addressing information used to deliver packets across a network or internet.
- noncode resource
- A resource containing the data structures on which the program operates, for example, 'WIND', 'DLOG', 'DITL', or 'SIZE' resources. You use the resource compiler Rez or a resource editor to create noncode resources.
- noncompressed sound data
- Sampled-sound data that has not been subjected to audio compression or that has been decompressed.
- nonextended network
- An AppleTalk network that is assigned only one network number and supports only one zone. LocalTalk is an example of a nonextended network.
- nonrelocatable block
- A block whose location in the heap is fixed. This block can't be moved during heap compaction or other memory operations.
- nonvolatile register
- A register whose contents must be preserved across subroutine calls. If a routine changes the value of a nonvolatile register, it must save the old value on the stack before changing the register and restore that value before returning
See also: saved registers area, volatile register
- non-debugging environment
- The QuickDraw GX end-user environment consisting of the non-debugging version, errors and warnings, and application-defined message handlers
See also: error, warning, message handler
- non-debugging version
- The version of QuickDraw GX that provides a limited set of errors and warnings. This version is intended for use with a debugged application
See also: debugging version, error, warning
- non-delivery indication
- Information within a report that indicates unsuccessful attempts to deliver a specific message to a specific recipient.
- non-letter message
- A message sent from one application or process to another, not intended to be read by people
See also: letter
- normalize
- To divide a mapping matrix by the absolute value of matrix element w. A mapping is considered normalized whenever the matrix element w has the value 1.
- normalized number
- A binary floating-point number in which all significand bits are significant: that is, the leading bit of the significand is 1
See also: denormalized number
- note
See: frequency, MIDI note value
- note alert
- An alert box that informs users of a minor mistake that won't have any disastrous consequences if left as is. Usually a note alert simply offers information, and the user responds by clicking the OK button. A note alert is identified by an icon bearing a face and a cartoonlike dialog balloon in the upper-left corner of the alert box
See also: caution alert, stop alert
- notice
- A single descriptive phrase that is posted by the debugging version of QuickDraw GX whenever an unnecessary or redundant function has been performed. Execution continues as if the notice had not been posted. Notices are posted only in the debugging version of QuickDraw GX. A notice number is a unique number in the range _25999 through _25500 assigned to each QuickDraw GX notice message. Each notice number has a unique notice name
See also: notice name
- notice name
- A multiple-word phrase that describes the QuickDraw GX notice posted. Each notice name has a unique notice number
See also: notice
- notice number
See: notice
- notification
- An audible or visible indication that your application (or other piece of software) requires the user's attention
See also: alert notification, audible notification, polite notification
- Notification Manager
- The part of the Mac OS that allows you to inform users of significant occurrences in applications that are running in the background or in software that is largely invisible to the user.
- notification queue
- The Notification Manager's list of pending notification requests.
- notification record
- The internal representation of a notification request, through which you specify how a notification is to occur. Defined by the NMRec data type.
- notification request
- A request to the Notification Manager to create a notification.
- notification response procedure
- A procedure that the Notification Manager can execute as the final step in a notification.
- no-match character
- The character produced when the keystroke that follows a dead key is a space character or is not a valid completer key. The no-match character is usually a stand-alone accent form; for example, the no-match character for the dead-key combination Option-E is \xC7.
- NTSC
See: National Television System Committee (NTSC)
- NuBus
- The 32-bit wide synchronous bus used for expansion cards in the Macintosh II family of computers.
- NuBus expansion interface
- A 32-bit-wide synchronous, multislot expansion bus used for interfacing expansion cards to some Macintosh computers
See also: bus interface, NuBus slot
- NuBus expansion slot
- A connector attached to the NuBus in a Macintosh II computer, into which an expansion card can be installed.
- NuBus slot
See: NuBus expansion slot
- null descriptor record
- A descriptor record whose descriptor type is typeNull and whose data handle is NIL.
- null event
- An event indicating that no events of the requested types exist in the application's event stream.
- null scrap
- A scrap that is created and initialized for a TextEdit multistyled edit record to store style information associated with an insertion point.
- Numbers control panel
- A control panel that allows the user to specify default number and currency formats for text of the system script.
- number parts table
- A table in the tokens resource that contains number-formatting information.
- Numerical C Extensions Group (NCEG)
See: ANSI X3J11.1
- numeric-format resource
- An international resource of type 'itl0'. The numeric-format resource defines conventions for formatting numeric strings. Each installed script system has one or more numeric-format resources.